100% Polyester Fleece to Sherpa Ultra Soft with Dual Control - Get cozy with Serta heated sherpa blanket. Queen and larger sizes come with dual zone temperature capability and 2 controllers to adjust each bed side independently for everyone's personal comfort Safe & Warm - Quick to heat up with evenly spaced heating wires creating even heat distribution for your comfort. Serta electric blanket emits low EMF and ETL certified and independently tested to provide highest safety 1 Heated Blanket - 84"W x 62"L Twin & Full Size comes with one controller, while larger sizes come with 2 controllers Easy Care - Conveniently machine washable and carry 5 year warranty. DO NOT LEAVE CONTROLLER COVERED WHEN IN USE TO AVOID OVERHEATING